Water heater and control method

Abstract

The invention discloses a water heater and a control method, and relates to the field of water heaters, and the water heater comprises a machine shell, a water inlet pipe, a first heating piece, a water outlet pipe and a second heating piece. A water storage cavity, a flow guide cavity and a heating cavity are formed in the machine shell, the flow guide cavity and the water storage cavity are isolated from the heating cavity, and the flow guide cavity is communicated with the water storage cavity and can conduct heat with the heating cavity. One end of the water inlet pipe is connected with an external water source, and the other end of the water inlet pipe is communicated with the water storage cavity for injecting water into the water storage cavity; one end of the water pipe communicates with the outside of the water storage cavity, and the other end of the water outlet pipe extends into the water storage cavity and communicates with the flow guide cavity. The first heating piece is located in the water storage cavity, connected with the machine shell and used for heating water in the water storage cavity, and the second heating piece is arranged in the heating cavity and used for heating water flowing through the flow guide cavity. Therefore, the problem that the temperature of water heated in the water heater is lowered when the water flows to the water inlet of the water outlet pipe is solved.

Description

Technical Field

[0001] The present invention relates to the field of water heaters, and in particular to a water heater and a control method thereof. Background Art

[0002] A water heater is a household appliance or device used to heat and store hot water. The water heater converts electrical energy into thermal energy through the heating element, thereby heating the water in the heater tank. The heated hot water flows out through the outlet pipe for users to use.

[0003] In the related art, in order to ensure that the low-temperature water entering the inner part through the water inlet pipe can be heated in time, the heating element in the water heater tank is usually set at the water outlet of the water inlet pipe in the tank, and the heated water flows out from the water outlet pipe.

[0004] When users use hot water, cold water will continuously enter the inner tank of the water heater, causing the water temperature to drop, and the heating element cannot heat the water to the required temperature in a short time. If the user is in a hurry to use hot water for a long time or the hot water temperature is high, the heating element cannot meet the user's demand for hot water, affecting the user's experience. Summary of the Invention

[0005] The embodiments of the present invention provide a water heater and a control method, which solve the problem that the temperature of water heated inside the water heater decreases when it flows to the water inlet of the water outlet pipe.

[0006] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0007] In a first aspect, embodiments of the present application provide a water heater comprising a housing, a water inlet pipe, a first heating element, a water outlet pipe, and a second heating element. The housing comprises a water storage chamber, a flow diversion chamber, and a heating chamber. The flow diversion chamber and the water storage chamber are each isolated from the heating chamber. The flow diversion chamber communicates with the water storage chamber and can conduct heat to the heating chamber.

[0008] One end of the water inlet pipe is used to connect to an external water source, and the other end of the water inlet pipe is connected to the water storage chamber for injecting water into the water storage chamber; one end of the water pipe is connected to the outside of the water storage chamber, and the other end of the water outlet pipe extends into the water storage chamber and is connected to the diversion chamber.

[0009] The first heating element is located in the water storage chamber and is connected to the casing for heating the water in the water storage chamber. The second heating element is located in the heating chamber for heating the water flowing through the diversion chamber.

[0010] Through the above arrangement, when the user uses the hot water in the water heater, as the hot water continues to flow out, cold water will continue to enter the water storage chamber. At this time, the first heating element can preliminarily heat the incoming cold water, and by arranging the second heating element in the heating chamber, the heating chamber can be heat-conducted with the guide chamber, and the second heating element can perform secondary heating on the hot water flowing into the guide chamber to ensure the temperature of the hot water.

[0011] In this way, when the user is in a hurry to use hot water for a long time or the hot water used is at a high temperature, the first heating element and the second heating element can heat the water in the water storage chamber in turn, so that the temperature of the water in the water storage chamber meets the user's demand for hot water and improves the user's experience.

[0012] In some embodiments, the casing includes a shell and an inner liner, the inner liner is arranged in the shell, a heating chamber is formed between the inner liner and the shell, and a water storage chamber is formed inside the inner liner.

[0013] In some embodiments, the inner tank also includes a main body and a heat collecting component. A water storage cavity is formed in the main body. The heat collecting component is arranged between the main body and the shell and connected to the main body. The heat collecting component forms a flow guide cavity, and the second heating component is connected to the outer wall surface of the heat collecting component.

[0014] In some embodiments, the inner tank also includes a main body, a heat collecting element and a first flow guide sleeve. A water storage cavity is formed in the main body, and an installation gap is formed between the main body and the shell. The heat collecting element is arranged in the water storage cavity and connected to the inner tank. A first recess is formed on the surface of the heat collecting element close to the shell. The first recess is connected to the installation gap to form a heating cavity, and the second heating element is located in the first recess.

[0015] Part of the heat collecting element is located in the first flow guiding sleeve, and a flow guiding cavity is formed between the heat collecting element and the first flow guiding sleeve.

[0016] In some embodiments, a second recessed portion is formed on the surface of the heat collecting element close to the water storage cavity, and the second recessed portion forms a guide cavity; a connecting hole is formed on the surface of the water storage cavity close to the heat collecting element, and the opening of the second recessed portion is connected to the water storage cavity through the connecting hole.

[0017] In some embodiments, the inner tank also includes a heat-conducting sleeve, which is located in the flow diversion cavity and connected to the heat collecting element; the other end of the water outlet pipe extends into the heat-conducting sleeve through an opening at one end of the heat-conducting sleeve close to the water storage cavity, and the peripheral wall of the water outlet pipe is thermally conductive to the peripheral wall of the heat-conducting sleeve.

[0018] A flow guiding gap is formed between the outer peripheral wall surface of the heat conducting sleeve and the flow guiding cavity, and the flow guiding gap is connected with the water storage cavity and the other end of the water outlet pipe.

[0019] In some embodiments, the inner tank further includes a second flow guide sleeve and a sealing plate, at least a portion of the second flow guide sleeve is located in the flow guide gap, and the flow guide sleeve is sleeved on the outside of the heat conductive sleeve.

[0020] There are gaps between the outer peripheral wall surface of the second flow guide sleeve and the heating chamber, and between the inner peripheral wall surface of the second flow guide sleeve and the outer peripheral wall surface of the heat conductive sleeve.

[0021] The blocking plate is located on one side of the heat-conducting sleeve close to the water storage chamber, and blocks an opening of the second flow-conducting sleeve close to the water storage chamber. The other end of the water outlet pipe passes through the blocking plate and extends into the heat-conducting sleeve.

[0022] There are gaps between the end surface of the heat-conducting sleeve close to the water storage cavity and the blocking plate, and between the inner peripheral wall surface of the heat-conducting sleeve and the outer peripheral wall surface of the water outlet pipe.

[0023] In some embodiments, the inner tank further includes a heat-conducting sleeve and a heat-conducting plate.

[0024] The heat-conducting sleeve is sleeved on the outside of the heat collecting element, and the inner peripheral wall surface of the heat-conducting sleeve contacts the outer peripheral wall surface of the heat collecting element;

[0025] The heat conducting plate is arranged at one end of the heat collecting member away from the shell and blocks the opening of the heat conducting sleeve at one end away from the shell. The surface of the heat conducting plate close to the heat collecting member contacts the heat collecting member.

[0026] In some embodiments, the water heater further includes a thermometer, which is disposed in the diversion cavity and is used to measure the water temperature in the diversion cavity.

[0027] In a second aspect, an embodiment of the present application provides a method for controlling a water heater, the method being applied to any of the above-mentioned water heaters, comprising:

[0028] When the water heater is turned on, the first heating element is controlled to start working to heat the water in the water storage chamber to a first preset temperature;

[0029] Determining whether the first preset temperature is lower than the user's actual required temperature;

[0030] If the first preset temperature is lower than the actual required temperature, the second heating element is controlled to start working to heat the water in the diversion cavity to the actual required temperature;

[0031] If the first preset temperature is greater than or equal to the actual required temperature, the second heating element is controlled to stop working.

[0032] It should be noted that the technical effects brought about by the implementation method of the second aspect can be referred to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1This is one of the schematic diagrams of the water heater structure in the related art;

[0034] Figure 2 This is the second schematic diagram of the water heater structure in the related art;

[0035] Figure 3 This is one of the schematic diagrams of the water heater structure in this application;

[0036] Figure 4 This is the second schematic diagram of the water heater structure in this application;

[0037] Figure 5 This is the third schematic diagram of the water heater structure in this application;

[0038] Figure 6 This is the fourth schematic diagram of the water heater structure in this application;

[0039] Figure 7 This is the fifth schematic diagram of the water heater structure in this application;

[0040] Figure 8 This is the sixth schematic diagram of the water heater structure in this application;

[0041] Figure 9 This is the seventh schematic diagram of the water heater structure in this application;

[0042] Figure 10a This is the eighth schematic diagram of the water heater structure in this application;

[0043] Figure 10b This is the ninth structural diagram of the water heater in this application;

[0044] Figure 11 This is the tenth schematic diagram of the water heater structure in this application;

[0045] Figure 12 This is the eleventh schematic diagram of the water heater structure in this application;

[0046] Figure 13 This is the twelfth schematic diagram of the water heater structure in this application;

[0047] Figure 14 This is the thirteenth schematic diagram of the water heater structure in this application;

[0048] Figure 15 This is the fourteenth schematic diagram of the water heater structure in this application;

[0049] Figure 16 This is the fifteenth schematic diagram of the water heater structure in this application;

[0050] Figure 17 This is the sixteenth schematic diagram of the water heater structure in this application;

[0051] Figure 18 This is a schematic diagram of the heat collecting structure in this application;

[0052] Figure 19a This is one of the schematic structural diagrams of the second heating element in this application;

[0053] Figure 19b This is the second structural diagram of the second heating element in this application;

[0054] Figure 20 This is one of the schematic diagrams of the water heater structure in this application;

[0055] Figure 21 This is the second structural diagram of the water heater in this application.

[0056] Figure numerals: 100-water heater; 101-casing; 1011-shell; 1012-inner tank; 102-water inlet pipe; 1021-water inlet; 103-water outlet pipe; 1031-water outlet; 104-water storage chamber; 1041-connecting hole; 105-first heating element; 106-second heating element; 107-flow guide chamber; 108-heating chamber; 109-heat collecting element; 1091-first recessed portion; 1092-second recessed portion; 1093-heating wire; 1094-insulating sleeve; 1095-insulating plate, 110-thermal conductive sleeve; 111-flow guide gap; 112-first flow guide sleeve; 113-second flow guide sleeve; 114-sealing plate; 115-control panel; 116-thermometer; 117-magnesium rod; 118-drain outlet. DETAILED DESCRIPTION

[0057] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0058] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0061] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0062] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0063] The water heater 100 is a household appliance for heating water and providing hot water. The household water heater 100 generally uses electricity, natural gas or other energy sources to heat water, and then stores the hot water in a water tank and supplies it to users.

[0064] Figure 1 This is a schematic diagram of the internal structure of a water heater 100 in the related art. Water to be heated flows from a water inlet pipe 102 into a water storage chamber 104 within an inner tank 1012, where it is heated by a first heating element 105. The heat energy increases the distance between water molecules, making them more active and diffusing. This reduces the mass per unit volume, leading to a decrease in density. The heated water is higher than the unheated cold water in the water heater 100, flowing above the water storage chamber 104.

[0065] In order to ensure that the water at the water inlet of the water outlet pipe 103 is hot water, the water inlet of the water outlet pipe 103 is higher than the water outlet of the water inlet pipe 102 in the water storage chamber 104. In this way, the heated water flows above the water storage chamber 104 to the water inlet of the water outlet pipe 103, and the user can use hot water when using water.

[0066] Furthermore, in order to utilize gravity to help water flow into the water storage chamber 104 of the water heater 100 and reduce the cost of additional equipment such as water pumps, the water outlet of the water inlet pipe 102 is arranged near the water storage chamber 104 at the bottom of the water heater 100 in the height direction. At the same time, it can also avoid backflow, causing abnormal water level in the water tank and affecting the normal operation of the water heater 100.

[0067] Furthermore, when the user uses the hot water of the water heater 100, as the hot water continues to be discharged, cold water will continue to enter the inner tank of the water heater 100. During this process, the hot water will rise and the cold water will sink, so the water outlet is located at a high position to help the hot water flow out more easily, and at the same time, the cold water can more easily enter the water tank for heating. In order to ensure that the water inlet of the water outlet pipe 103 is the water with the highest temperature in the water storage chamber 104, the water inlet of the water outlet pipe 103 is close to the water storage chamber 104 along the height direction of the water heater 100 and away from the wall of one end of the water inlet. In this way, the water outlet of the water inlet pipe 102 is located at a low position and the water inlet of the water outlet pipe 103 is located at a high position, which can better utilize the gravity of water and the principle of natural convection, ensure the normal operation of the water heater 100 and provide a stable supply of hot water.

[0068] Exemplarily, the first heating element 105 is an electric heating tube that heats water by the principle of resistance heating.

[0069] Figure 2 This is a side view of the internal structure of a water heater 100 in the related art. Even if the water pipes are arranged as described above, with the outlet of the water inlet pipe 102 at a low position and the inlet of the water outlet pipe 103 at a high position, the temperature of the water in the water storage chamber 104 will still decrease after the cold water enters the water storage chamber 104 and mixes with the hot water in the water storage chamber 104. In particular, as the hot water continues to flow out, the water temperature will continue to drop. Figure 2 The water at point A will also lose some heat as it flows, which will further cause the water temperature to drop.

[0070] In this way, if the user is in a hurry to use hot water for a long time or the hot water used is at a high temperature, the temperature of the hot water entering the water outlet pipe 103 cannot meet the user's water demand, which will affect the user's usage experience.

[0071] In order to solve the above problems, the present application provides a water heater 100, including a casing 101, a water inlet pipe 102, a first heating element 105, a water outlet pipe 103 and a second heating element 106, wherein the first heating element 105 heats the water at the water outlet of the water inlet pipe 102, and the second heating element 106 performs secondary heating on the water at the water inlet of the water outlet pipe 103, so that the water temperature at the water inlet of the water outlet pipe 103 can meet the water needs of the user, thereby solving the problem that the temperature of the water heated inside the water heater 100 will become low when it flows to the water inlet of the water outlet pipe 103.

[0072] The second heating element 106 can be located inside the water storage chamber 104 or outside the water storage chamber 104. When the second heating element 106 is located inside the water storage chamber 104, the second heating element 106 can directly heat the water, thereby achieving a higher heating efficiency. However, in this case, there is a certain risk of leakage when the second heating element 106 comes into contact with water, and the second heating element 106 is easily corroded when immersed in water.

[0073] To improve the safety factor of the water heater 100, see Figure 3 Combined with Figure 4 、 Figure 5 In this application, a water storage chamber 104, a flow guide chamber 107 and a heating chamber 108 are formed in the casing 101. The flow guide chamber 107 and the water storage chamber 104 are isolated from the heating chamber 108 respectively. The flow guide chamber 107 is connected to the water storage chamber 104 and can conduct heat conduction with the heating chamber 108.

[0074] One end of the water inlet pipe 102 is used to connect to an external water source, and the other end of the water inlet pipe 102 is connected to the water storage chamber 104 for injecting water into the water storage chamber 104; one end of the water outlet pipe 103 is connected to the outside of the water storage chamber 104, and the other end of the water outlet pipe 103 extends into the water storage chamber 104 and is connected to the diversion chamber 107.

[0075] The water in the water storage chamber 104 can enter the diversion chamber 107 , and enter the water outlet pipe 103 through the diversion chamber 107 , and then be discharged from the water outlet pipe 103 .

[0076] The first heating element 105 is located in the water storage chamber 104 and connected to the housing 101 for heating the water in the water storage chamber 104 . The second heating element 106 is located in the heating chamber 108 for heating the water flowing through the diversion chamber 107 .

[0077] With the above arrangement, the water entering the water storage chamber 104 of the water heater 100 is heated by the first heating element 100. When the hot water in the water heater 100 is not in use, the first heating element 100 can heat the hot water in the water storage chamber 104 to a preset temperature and then stop heating.

[0078] When the user uses the hot water in the water heater 100, as the hot water continues to flow out, cold water will continue to enter the water storage chamber 104. At this time, the cold water entering the water storage chamber 104 will affect the temperature of the original hot water in the water storage chamber 104. Therefore, the first heating element 100 can preliminarily heat the incoming cold water, and by arranging the second heating element 106 in the heating chamber 108, the heating chamber 108 can be heat-conducted with the guide chamber 107, and the second heating element 106 can perform secondary heating on the hot water flowing into the guide chamber 107 to ensure the temperature of the hot water.

[0079] In this way, when the user is in a hurry to use hot water for a long time or the hot water used is at a high temperature, the first heating element 105 and the second heating element 106 can heat the water in the water storage chamber 104 in turn, so that the temperature of the water in the water storage chamber 104 meets the user's demand for hot water and improves the user's usage experience.

[0080] In addition, the heating chamber 108 and the water storage chamber 104 are thermally isolated from each other, which can prevent the second heating element 106 arranged in the heating chamber 108 from contacting water, thereby avoiding safety risks such as leakage and reducing water corrosion to the second heating element 106.

[0081] In some embodiments, the housing 101 includes a shell 1011 and an inner liner 1012 . The inner liner 1012 is disposed in the shell 1011 . A heating chamber 108 is formed between the inner liner 1012 and the shell 1011 . A water storage chamber 104 is formed inside the inner liner 1012 .

[0082] The second heating element 106 is arranged in the heating chamber 108 between the inner tank 1012 and the shell 1011, realizing water-electricity isolation, which can effectively reduce the safety risks such as leakage and electric shock caused by the contact of the second heating element 106 with water, and avoids the corrosion and damage of the second heating element 106 by the humid environment inside the water storage chamber 104, thereby extending the service life of the second heating element 106.

[0083] At the same time, when the second heating element 106 fails, the user only needs to remove the shell 1011 to repair the second heating element 106, further reducing the maintenance cost of the water heater 100. When producing the water heater 100, it is only necessary to add the second heating element 106 in the heating chamber 108, reducing the production cost of the water heater 100.

[0084] In order to achieve a fast and precise temperature control heating effect for the water at the water inlet of the outlet pipe 103, the heating method of the second heating element 106 is electromagnetic heating. Electromagnetic heating can directly convert electrical energy into thermal energy with high efficiency, and can accurately control the temperature of the heated water by controlling the current size and frequency. At the same time, electromagnetic heating can also realize the magnetization of water.

[0085] Exemplarily, the second heating element 106 is made of PCT material. The second heating element 106 utilizes the characteristics of PTC material. When current passes through the second heating element 106, the resistance of the second heating element 106 increases with the increase of temperature, thereby limiting the current size and achieving self-stable heating.

[0086] Exemplarily, the second heating element 106 is a heating wire 1093 , which is a heating wire covered with an insulating material. It generates heat by being energized, thereby heating the water at the water inlet of the water outlet pipe 103 .

[0087] Exemplarily, the second heating element 106 is a heating element such as a flexible heating film or a heating patch, which is made by printing a conductive material on an insulating substrate using a printing technology.

[0088] It is understandable that the specific material and installation method of the second heating element 106 can be selected according to actual conditions, and this application does not make any specific restrictions on this.

[0089] In some embodiments, see Figure 3 , Figure 3 One of the water flow paths is shown in the figure. The second heating element 106 is laid on the outer surface of the inner pot 1012. The inner pot 1012 transfers the heat of the second heating element 106 to the water in the guide cavity 107. The water after secondary heating flows into the water outlet pipe 103.

[0090] Further, see Figure 4 In order to further expand the heating area, the wall portion of the inner tank 1012 is set to be wavy, and the second heating element 106 is correspondingly set to be wavy and laid on the wavy wall surface of the inner tank 1012. The inner tank 1012 transfers the heat of the second heating element 106 to the water in the guide cavity 107, and the water after secondary heating flows into the outlet pipe 103.

[0091] It should be noted that the wall portion of the shell 1011 of the inner liner 1012 can also be set to a bent shape, a stepped shape, or other shape that can achieve an expanded contact area. The specific shape can be selected according to actual conditions, and this application does not make any specific restrictions on this.

[0092] In some embodiments, see Figure 5 as well as Figure 6 The inner tank 1012 also includes a main body and a heat collecting component 109. A water storage chamber 104 is formed in the main body. The heat collecting component 109 is arranged between the main body and the shell 1011 and is connected to the main body. The heat collecting component 109 forms a flow guide chamber 107, and the second heating component 106 is connected to the outer wall of the heat collecting component 109.

[0093] On this basis, by setting the structure of the heat collecting element 109, the water inlet of the water outlet pipe 103 can be located in the guide cavity 107, thereby changing the water flow near the water inlet of the water outlet pipe 103, so that the water flow must pass through the guide cavity 107 for secondary heating during the flow process before it flows out of the water storage cavity 104. In this way, the heating efficiency of the secondary heating is further improved, ensuring that the heat of the second heating element 106 is completely absorbed by the water flow near the water inlet of the water outlet pipe 103, and has a higher heating effect.

[0094] It should be noted that, in order to avoid affecting the water flow inside the diversion cavity 107 , a certain gap is provided between the water inlet of the water outlet pipe 103 and the wall surface of the diversion cavity 107 .

[0095] Exemplarily, the second heating element 106 and the water inlet of the water outlet pipe 103 are arranged on both sides of the side wall of the inner tank 1012 relative to each other, and the heat collecting element 109 is located around the water inlet of the water outlet pipe 103. The specific selection can be made according to actual conditions, and this application does not make any specific restrictions on this.

[0096] In some embodiments, see Figure 6 as well as Figure 7 At this time, the inner tank 1012 also includes a main body, a heat collecting component 109 and a first flow guide sleeve 112. A water storage cavity 104 is formed in the main body, and an installation gap is formed between the main body and the shell 1011. The heat collecting component 109 is arranged in the water storage cavity 104 and is connected to the inner tank 1012. A first recessed portion 1091 is formed on the surface of the heat collecting component 109 close to the shell 1011. The first recessed portion 1091 is connected to the installation gap to form a heating cavity 108. The second heating component 106 is located in the first recessed portion 1091.

[0097] The first recessed portion 1091 and the main body may be an integral structure, for example, the first recessed portion 1091 may be formed by the inner liner 1012 being recessed toward the water storage chamber 104. Alternatively, the structure may be split, for example, a mounting hole may be provided through the inner liner 1012, and the heat conducting block having the first recessed portion 1091 may be mounted on the inner liner 1012 through the mounting hole. The specific selection may be based on actual conditions and is not specifically limited in this application.

[0098] Furthermore, to facilitate user maintenance of the second heating element 106, an access hole corresponding to the position of the second heating element 106 can be provided in the housing 1011, allowing for precise maintenance and improved efficiency. Furthermore, decorative elements can be added to the corresponding positions of the access holes to enhance the aesthetics of the water heater 100. The specific selection can be made based on actual circumstances and is not specifically limited in this application.

[0099] For example, the first recessed portion 1091 may be Figure 7 The hollow cylindrical shape shown can also be Figure 8 The hollow inverted V shape shown can also be a hollow cuboid. The specific selection can be made according to actual conditions, and this application does not make any specific limitations on this.

[0100] For example, the first recess 1091 may be as follows Figure 8 As shown, it is completely located in the water storage chamber 104, and can also be as shown. Figure 9 The shown part is located in the water storage chamber 104, and the other part is located between the installation gaps. The specific selection can be made according to actual conditions, and this application does not make any specific restrictions on this.

[0101] The heat collecting element 109 is partially located in the first guide sleeve 112 , and there is a gap between the first guide sleeve 112 and the wall of the water storage chamber 104 , so that a guide chamber 107 is formed between the heat collecting element 109 and the first guide sleeve 112 . Figure 7 The dashed line with an arrow in the middle shows the direction of a water flow.

[0102] In this way, the water after the initial heating flows into the guide cavity 107, and the heat generated by the second heating element 106 is conducted through the first recessed portion 1091, so that the water in the guide cavity 107 can be heated for the second time, so that the water temperature of the water outlet pipe 103 can meet the user's requirements.

[0103] In some embodiments, see Figure 10a as well as Figure 10b A second recessed portion 1092 is formed on the surface of the heat collecting element 109 close to the water storage chamber 104, and the second recessed portion 1092 forms a guide chamber 107; a connecting hole 1041 is formed on the surface of the water storage chamber 104 close to the heat collecting element 109, and the opening of the second recessed portion 1092 is connected to the water storage chamber 104 through the connecting hole 1041.

[0104] The second recessed portion 1092 and the main body may be an integral structure, for example, the second recessed portion may be formed by the inner liner 1012 being recessed toward the water storage chamber 104. Alternatively, the structure may be split, for example, a connecting hole 1041 may be provided through the inner liner 1012, and a heat conducting block having the second recessed portion 1092 may be mounted on the inner liner 1012 through the connecting hole 1041. The specific selection may be based on actual conditions and is not specifically limited in this application.

[0105] For example, the first recessed portion 1091 may be Figure 10b The hollow cylindrical shape shown can also be a hollow raised triangle or a hollow cuboid. The specific shape can be selected according to actual conditions, and this application does not make any specific restrictions on this.

[0106] For example, the first recess 1091 may be as follows Figure 10bAs shown, it is completely located between the inner liner 1012 and the shell 1011, or it can be partially located between the inner liner 1012 and the shell 1011, and partially located in the water storage chamber 104. The specific selection can be made according to actual conditions, and this application does not make any specific restrictions on this.

[0107] In this way, Figure 10b The dotted line with an arrow in the middle shows the direction of water flow. After the initial heating, the water flows into the guide cavity 107. The heat generated by the second heating element 106 is conducted through the second recessed portion 1092, so that the water in the guide cavity 107 can be heated for the second time, so that the water temperature of the water outlet pipe 103 can meet the user's needs.

[0108] In some embodiments, see Figure 11 、 Figure 12 、 Figure 13 as well as Figure 18 The inner tank 1012 also includes a heat-conducting sleeve 110, which is located in the flow guide cavity 107 and is connected to the heat collecting component 109. The heat-conducting sleeve 110 can be connected to the side wall of the flow guide cavity 107 or to the bottom wall of the flow guide cavity 107. The specific selection can be made according to actual conditions, and this application does not make any specific restrictions on this.

[0109] It should be noted that regardless of the connection method, a bypass hole for water flow must be provided near the upper end of the peripheral wall of the thermal sleeve 110. This bypass hole connects the diversion cavity 107 with the water inlet of the outlet pipe 103. Hot water entering the diversion cavity 107 can flow into the outlet pipe 103 through the bypass hole to avoid affecting the water output of the water heater 100. The specific selection can be made based on actual conditions and is not specifically limited in this application.

[0110] by Figure 13 For example and see Figure 16 In this application, the outer tube wall of the thermal sleeve 110 and the side wall of the guide cavity 107 form a guide gap, one end of the thermal sleeve 110 is connected to the bottom wall of the guide cavity 107, and a plurality of avoidance holes are opened on the tube wall of the thermal sleeve 110 close to the guide cavity 107.

[0111] Exemplarily, the other end of the thermal sleeve 110 extends toward the water storage chamber 104, and the other end of the thermal sleeve 110 is sleeved on the side wall of the water outlet pipe 103 at one end inside the water storage chamber 104, and the inner tube wall of the thermal sleeve 110 is in contact with the outer tube wall of the water outlet pipe 103, thereby conducting heat to the water outlet pipe 103, and is spaced apart from the bottom wall of the heating chamber 108.

[0112] Exemplarily, the other end of the thermal sleeve 110 extends toward the water storage chamber 104, and the other end of the thermal sleeve 110 is sleeved on the side wall of the water outlet pipe 103 at one end inside the water storage chamber 104, and the inner tube wall of the thermal sleeve 110 is spaced apart from the outer tube wall of the water outlet pipe 103, and heat conduction is achieved through the water flow in the middle and the outer tube wall of the water outlet pipe 103, and the thermal sleeve 110 is spaced apart from the bottom wall of the heating chamber 108.

[0113] The other end of the water outlet pipe 103 extends into the thermal sleeve 110 through an opening at one end of the thermal sleeve 110 near the water storage chamber 104. The peripheral wall of the water outlet pipe 103 is thermally connected to the peripheral wall of the thermal sleeve 110. A flow-guiding gap 111 is formed between the outer peripheral wall of the thermal sleeve 110 and the flow-guiding chamber 107, connecting the water storage chamber 104 and the other end of the water outlet pipe 103.

[0114] In this way, see Figure 12 as well as Figure 13 Both sides of the guide cavity 107 can achieve secondary heating of the water flow, so that the water flow is fully in contact with the cavity wall, thereby improving the heating efficiency of the water heater 100, shortening the heating time, quickly providing hot water supply, and improving the user's water use experience.

[0115] Moreover, the full contact between the water flow and the cavity wall can ensure that all parts of the water in the diversion cavity 107 can be evenly heated, avoiding the situation where the local temperature is too high or too low, ensuring that the temperature of the hot water is uniform and stable, and at the same time reducing energy loss, effectively improving energy utilization, reducing energy consumption, and achieving the purpose of energy saving.

[0116] It can also reduce the workload of the second heating element 106, lower the temperature of the second heating element 106, reduce thermal stress, help extend the service life of the water heater 100, ensure that impurities in the water are fully dissolved, avoid water pollution, improve the quality of hot water, and ensure that the hot water used by users is clean and hygienic.

[0117] In some embodiments, see Figure 14 and Figure 15 The inner tank 1012 further includes a second flow guide sleeve and a sealing plate 114 . At least a portion of the second flow guide sleeve 113 is located in the flow guide gap 111 , and the flow guide sleeve is sleeved on the outside of the thermal sleeve 110 .

[0118] There are gaps between the outer peripheral wall of the second flow guiding sleeve 113 and the heating chamber 108 , and between the inner peripheral wall of the second flow guiding sleeve 113 and the outer peripheral wall of the heat conducting sleeve 110 .

[0119] The sealing plate 114 is located on one side of the heat-conducting sleeve 110 close to the water storage chamber 104 and blocks one end opening of the second flow-conducting sleeve 113 close to the water storage chamber 104 . The other end of the water outlet pipe 103 passes through the sealing plate 114 and extends into the heat-conducting sleeve 110 .

[0120] There are gaps between the end surface of the heat-conducting sleeve 110 close to the water storage chamber 104 and the blocking plate 114 , and between the inner peripheral wall of the heat-conducting sleeve 110 and the outer peripheral wall of the water outlet pipe 103 .

[0121] On this basis, Figure 15 The formed first channel I, second channel II and third channel III are shown in FIG.

[0122] In this way, the outer tube wall of the thermal sleeve 110 and the side wall of the heating chamber 108 form a first channel I, and one end of the thermal sleeve 110 is connected to the bottom wall of the heating chamber 108.

[0123] The other end of the thermal sleeve 110 extends toward the water storage chamber 104 , and the other end of the thermal sleeve 110 is sleeved on the side wall of the water outlet pipe 103 at one end inside the water storage chamber 104 , forming a second channel II between the inner tube wall of the thermal sleeve 110 and the outer tube wall of the water outlet pipe 103 .

[0124] One end of the second flow guide sleeve 113 is connected to the outer wall of the water outlet pipe 103 to form a first connection. The first connection and the other end of the heat conductive sleeve 110 are spaced apart along the height direction of the water heater 100, and a third channel III is formed therebetween. The other end of the second flow guide sleeve 113 passes through the first channel I and extends toward one end of the bottom wall near the heating chamber 108, and is spaced apart from the bottom wall of the heating chamber 108. The first channel I, the second channel II, and the third channel III are in communication with the water outlet pipe 103, and the first channel I, the second channel II, and the third channel III form a water flow channel. Figure 15 The dashed line with an arrow in the middle shows one of the water flow channels.

[0125] Among them, the dimensions of the second flow guide sleeve 113 and the heat conductive sleeve 110 along the height direction of the water heater 100 and the dimensions of the sealing plate 114 along the width direction of the water heater 100 can affect the length of the water flow channel. They can be selected according to actual conditions, and this application does not make any specific restrictions on this.

[0126] On this basis, by dividing the guide channel into multiple channels, the contact area between the hot water and the second heating element 106 can be increased, heat transfer can be promoted, the heat exchange efficiency can be improved, and the secondary heating process can be made more efficient.

[0127] At the same time, the fluid cross-sectional area of ​​a single channel is reduced, the resistance to water flow is reduced, the water flow velocity is increased, and energy loss is reduced, which is beneficial to energy saving and increases the stability of the secondary heating system of the water heater 100.

[0128] In some embodiments, see Figure 7 The inner tank 1012 further includes a heat-conducting sleeve 110 and a heat-conducting plate (not shown in the figure).

[0129] The heat-conducting sleeve 110 is sleeved on the outside of the heat collecting element 109 , and the inner peripheral wall surface of the heat-conducting sleeve 110 contacts the outer peripheral wall surface of the heat collecting element 109 .

[0130] The heat conducting plate is disposed at one end of the heat collecting element 109 away from the shell 1011 and blocks the opening of the heat conducting sleeve 110 away from the shell 1011 . The surface of the heat conducting plate close to the heat collecting element 109 contacts the heat collecting element 109 .

[0131] On this basis, the second heating element 106 and the water storage chamber 104 are separated from water and electricity, further ensuring the safety of the water heater. In addition, the heat-conducting sleeve 110 and the heat-conducting plate have a heat-collecting effect on the water near the water inlet of the water outlet pipe 103. The heat transferred by the second heating element 106 will not be dispersed, avoiding heat loss.

[0132] In some embodiments, see Figure 19a and Figure 19b The heat collecting element 109 further includes an insulating sleeve 1094 and an insulating plate 1095 . The insulating sleeve 1094 and the insulating plate 1095 cover the surface of the heat collecting element 109 near the housing 101 and separate the second heating element 106 from the heat collecting element 109 .

[0133] Among them, the insulating sleeve 1094 and the insulating plate 1095 are made of insulating flame-retardant materials. The insulating sleeve 1094 and the insulating plate 1095 can isolate the second heating element 106 from the second recessed portion 1092 but can transfer heat to avoid leakage.

[0134] Exemplarily, the insulating sleeve 1094 and the insulating plate 1095 are made of polyurethane foam, which has good insulation and thermal insulation properties, as well as certain flame retardant properties.

[0135] Exemplarily, the insulating sleeve 1094 and the insulating plate 1095 are made of glass fiber insulating cotton, which has good insulation performance and high temperature resistance and can be used as the insulation layer material of the electric water heater 100.

[0136] Exemplarily, the insulating sleeve 1094 and the insulating plate 1095 are made of polyimide film, which has excellent insulation and flame retardant properties and can be used as the insulating and flame retardant thermal insulation layer material of the electric water heater 100 .

[0137] In some embodiments, a fixing sleeve is provided on the surface of the insulating sleeve 1094 for fixing the second heating element 106, which can ensure that the second heating element 106 is in close contact with the water heater 100, avoid uneven heating or heat loss due to shaking or loosening, and ensure the stability of the heating effect. At the same time, it can prevent the second heating element 106 from colliding or wearing with other components, reduce the safety hazards caused by the loosening of the second heating element 106, and ensure the safety of the equipment and users.

[0138] In addition, fixing the second heating element 106 can reduce damage and failure of the second heating element 106, reduce repair and replacement costs, save maintenance costs, and ensure close contact between the second heating element 106 and the water heater 100, improve heat transfer efficiency, and speed up heating speed.

[0139] In some embodiments, the second heating element 106 is disposed on the surface of the insulating sleeve 1094 by winding, and both ends are connected to the electromagnetic controller to achieve electromagnetic heating.

[0140] It should be noted that the material of the heat collecting element 109 can be a magnetic conductive material, which can concentrate and guide the magnetic field, enhance the magnetic field conductivity of the second heating element 106, improve the heating efficiency, and accelerate the heating speed of the water heater 100.

[0141] At the same time, by enhancing the magnetic field conductivity, the magnetic material can reduce energy loss, improve energy utilization, save energy costs, reduce heat loss of the water heater 100, improve the heating effect of secondary heating, and improve the stability and reliability of the water heater 100.

[0142] In some embodiments, the water outlet pipe 103 may also be made of a magnetic conductive material, which can reduce heat loss in the water outlet pipe 103 , improve the thermal insulation effect of hot water, reduce heat loss, and save energy costs.

[0143] At the same time, the magnetic material has a smooth surface and is not prone to scaling or fouling, which can keep the water outlet pipe 103 unobstructed and improve the smoothness of hot water. In addition, the magnetic material generally has high high temperature resistance and can withstand heat conduction in high temperature environments, reducing the risk of deformation or damage to the water outlet pipe 103.

[0144] In some embodiments, see Figure 5 A magnesium rod 117 is also provided in the inner tank 1012, which can absorb impurities and oxides in the water, reduce damage and corrosion to the first heating element 105, extend the life of the first heating element 105, and at the same time reduce the hardness and corrosiveness in the water, thereby extending the service life of the inner tank 1012.

[0145] At the same time, the heating efficiency of the first heating element 105 can be improved, energy waste can be reduced, and energy costs can be saved.

[0146] It should be noted that the magnesium rod 117 is set at the center of the inner liner 1012 to ensure that it is evenly distributed in the heater inner liner 1012 to avoid local overheating or corrosion.

[0147] In some embodiments, see Figure 5 Combined with Figure 21 The water heater 100 of the present application is also provided with a drain port 118, one end of which is connected to the inner tank 1012 and the other end is connected to the sewage pipe. The provision of the hot drain port 118 can keep the interior of the water heater 100 clean, extend the life of the equipment, and improve the efficiency and safety of the water heater 100. The drain port 118, the water inlet 1021, and the water outlet 1031 are sequentially provided at the bottom of the water heater 100 along the width direction of the water heater 100.

[0148] In some embodiments, see Figure 16 as well as Figure 17 The water heater 100 further includes a thermometer 116 , which is disposed in the diversion cavity 107 and is used to measure the water temperature in the diversion cavity 107 .

[0149] On this basis, by setting the thermometer 116, the water temperature at the water inlet of the water pipe 103 can be accurately measured. The user can compare the water temperature measured by the thermometer 116 with the actual required water temperature to determine whether the second heating element 106 is working normally.

[0150] The present application also provides a control method for the water heater 100. The control method is used for the above-mentioned water heater 100. The control method for the water heater 100 includes:

[0151] When the water heater 100 is turned on, the first heating element 105 is controlled to start working to heat the water in the water storage chamber 104 to a first preset temperature;

[0152] Determining whether the first preset temperature is lower than the user's actual required temperature;

[0153] If the first preset temperature is lower than the actual required temperature, the second heating element 106 is controlled to start working so as to heat the water in the guide cavity 107 to the actual required temperature.

[0154] If the first preset temperature is greater than or equal to the actual required temperature, the second heating element 106 is controlled to stop working.

[0155] For example, see Figure 20 , the user can adjust the working condition of the water heater 100 through the control panel 115 .

[0156] In this way, the user can promptly determine whether the second heating element 106 is required to work, thereby meeting his or her own water needs.

[0157] Alternatively, even if the first preset temperature is lower than the actual required temperature, but is within a range acceptable to the user, the user may not turn on the second heating element 106 .

[0158] In this application, users can adjust the heating components of the water heater 100 according to different usage requirements, thereby improving the user experience of the water heater 100 and meeting users' different requirements for hot water volume, temperature and stability.

[0159] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0160] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

[0161] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A water heater, characterized in that: include: a casing, wherein a water storage cavity is formed in the casing; a water inlet pipe, one end of which is used to connect to an external water source, and the other end of which is in communication with the water storage chamber, for injecting water into the water storage chamber; a first heating element, located in the water storage chamber and connected to the housing, for heating water in the water storage chamber; A flow guiding cavity and a heating cavity are further formed in the housing. The flow guiding cavity and the water storage cavity are respectively isolated from the heating cavity. The flow guiding cavity is in communication with the water storage cavity and can conduct heat conduction with the heating cavity. a water outlet pipe, one end of which is in communication with the outside of the water storage chamber, and the other end of which extends into the water storage chamber and is in communication with the diversion chamber; The second heating element is arranged in the heating cavity and is used for heating the water flowing through the guide cavity.

2. The water heater according to claim 1, characterized in that The housing comprises: case; The inner pot is arranged in the shell, the heating chamber is formed between the inner pot and the shell, and the water storage chamber is formed inside the inner pot.

3. The water heater according to claim 2, characterized in that The liner also includes: a main body, wherein the water storage cavity is formed in the main body; A heat collecting component is provided between the main body and the shell and is connected to the main body. The heat collecting component forms the flow guide cavity. The second heating component is connected to the outer wall surface of the heat collecting component.

4. The water heater according to claim 2, characterized in that The liner also includes: A body, wherein the water storage cavity is formed in the body, and an installation gap is formed between the body and the shell; a heat collecting element, the heat collecting element being disposed in the water storage cavity and connected to the inner tank, a first recess being formed on a surface of the heat collecting element close to the shell, the first recess being in communication with the installation gap to form the heating cavity, and the second heating element being located in the first recess; A first flow guide sleeve, wherein part of the heat collecting component is located inside the first flow guide sleeve, and the flow guide cavity is formed between the heat collecting component and the first flow guide sleeve.

5. The water heater according to claim 3, characterized in that A second recessed portion is formed on the surface of the heat collecting element close to the water storage cavity, and the second recessed portion forms the guide cavity; a connecting hole is formed on the surface of the water storage cavity close to the heat collecting element, and the opening of the second recessed portion is connected to the water storage cavity through the connecting hole.

6. The water heater according to claim 3 or 5, characterized in that: The inner tank further includes a heat-conducting sleeve, which is located in the flow-guiding cavity and connected to the heat collecting element; the other end of the water outlet pipe extends into the heat-conducting sleeve through an opening at one end of the heat-conducting sleeve close to the water storage cavity, and the peripheral wall of the water outlet pipe is thermally connected to the peripheral wall of the heat-conducting sleeve; A flow guiding gap is formed between the outer peripheral wall surface of the heat-conducting sleeve and the flow guiding cavity, and the flow guiding gap is connected with the water storage cavity and the other end of the water outlet pipe.

7. The water heater according to claim 6, characterized in that The liner also includes: a second flow guide sleeve, at least a portion of which is located in the flow guide gap, and the flow guide sleeve is sleeved on the outside of the thermal conductive sleeve; There is a gap between the outer peripheral wall surface of the second flow guide sleeve and the heating chamber, and between the inner peripheral wall surface of the second flow guide sleeve and the outer peripheral wall surface of the heat conductive sleeve; a blocking plate, located on a side of the heat-conducting sleeve close to the water storage chamber, and blocking an opening of one end of the second flow-conducting sleeve close to the water storage chamber; the other end of the water outlet pipe passes through the blocking plate and extends into the heat-conducting sleeve; There is a gap between the end surface of the heat-conducting sleeve close to the water storage cavity and the blocking plate, and between the inner peripheral wall surface of the heat-conducting sleeve and the outer peripheral wall surface of the water outlet pipe.

8. The water heater according to claim 4, characterized in that The liner also includes: a heat-conducting sleeve, which is sleeved on the outside of the heat collecting element, and the inner peripheral wall surface of the heat-conducting sleeve contacts the outer peripheral wall surface of the heat collecting element; The heat conducting plate is provided at one end of the heat collecting member away from the shell and blocks the opening of the end of the heat conducting sleeve away from the shell. The surface of one side of the heat conducting plate close to the heat collecting member contacts the heat collecting member.

9. The water heater according to any one of claims 1 to 5, characterized in that: The water heater further comprises a thermometer, which is arranged in the diversion cavity and is used to measure the water temperature in the diversion cavity.

10. A method for controlling a water heater, the method being applied to the water heater according to any one of claims 1 to 9, characterized in that: include: When the water heater is turned on, the first heating element is controlled to start working so as to heat the water in the water storage chamber to a first preset temperature; Determining whether the first preset temperature is lower than the user's actual required temperature; If the first preset temperature is lower than the actual required temperature, the second heating element is controlled to start working to heat the water in the diversion cavity to the actual required temperature; If the first preset temperature is greater than or equal to the actual required temperature, the second heating element is controlled to stop working.

Images